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Note 10 - Segment Information - Operating Segment Asset Reconciliation (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Mar. 31, 2018
Assets	$ 160,288	$ 164,101
Corporate, Non-Segment [Member]
Assets	14,905	9,283
Sterilzation and Disinfection Control [Member] | Operating Segments [Member]
Assets	77,817	83,452
Instruments [Member] | Operating Segments [Member]
Assets	30,616	33,479
Cold Chain Monitoring [Member] | Operating Segments [Member]
Assets	29,957	30,796
Cold Chain Packaging [Member] | Operating Segments [Member]
Assets	$ 6,993	$ 7,091

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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